Reversing-valve.



No. 805,726. PATBNTED NOV. 28, 1905.

O. HOVE. REVERSING VALVE.

APPLICATION FILED JULY23,1904.

2 SHEETS-SHEET l.

Il OLE Hor/5- gag* |51/ PATENTED NOV. 28, 1905.

O. HOVB. REVERSING VALVE. APYPLIGATION FILED JULY23,1904.

2 SHEETS-SHEET 2.

/V/ TACEJJES.

QL/W m- 'OLE HOVE, OF ELLSWORTH, vWISOON SIN.

REVE FiSlNG-VALVE.

Specication of Letters Patent.

Patented Nov. 28, 1905.

Application iiled July 23, 1904. Serial No. 217,803.

To all whom it may concern:

Beit known thatI, OLE Hove, of Ellsworth, Pierce county, Wisconsin, have invented certain new and useful Improvements in Reversing-Valves, of which the following is a speciiication.

Myinvention relates to steam-engines of the double-cylinder reciprocating type, and particularly to rotary reversible-valve and operating mechanism therefor; and the object of the invention is to provide a balanced valve having a quick cut-off and one in which the lead can be easily and quickly changed while running.

A further object is to provide an improved valve-operating mechanism and reversinggear.

Other objects of the invention will :appear from the following detailed description.

The invention consists generally in various constructions and combinations, all as hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specication, Figure 1 is a side elevation of an engine-bed and cylinder with my invention applied thereto. Fig. 2 is a horizontal section on the line XC Xc of Fig. 1. Fig. 3 isa vertical transverse section on the line m :n of Fig. l. Fig. 4 is a vertical longitudinal section on the line y y of Fig. 3. Fig. 5 is asection on the line X Xa of Fig.,',1. Fig. 6 is a section on the line Xb Xb of Fig. 1.

In the drawings, 2 represents an engine base or bed, having cylinders a and arranged side by side at one end of the bed.

3 is a crank-shaft mounted in bearings opposite the cylinders and connected with the pistons thereof in the usual way. I have omitted these connections in the drawings for clearness of illustration and because they form no part of the present-invention.

4 is a cylinder-casing arranged between the cylinders t and I) and provided with a rotary valve 5, having in its periphery a series of steam intake and exhaust ports 6 and 7. These ports are alternately arranged-that is, the intake-port at one end of the valve is opposite the exhaust at the other end, as indicated in Fig. 4.

I prefer to provide two intake and two eX- haust ports at each end of the valve. An annular groove 8 is provided in the periphery,

of the valve, communicating with the intakeports and with alive-steam pipe 9. Exhaustports 10 are provided in the ends of the casing 4, which may be connected by a pipe 11, as indicated in Figs. 1 and 3. The valve-casing 4 is also provided at each end with ports 12, th at communicate with the cylinders a and and also with the intake steam-ports 6. I have shown two of these ports 12 in Fig. 3 at one end of the valve-casing, and there are two similar ports provided at the other endone for each end of thecylinder.

The valve is provided with a stem or spindle 13, and a similar spindle 14 is mounted in bearings 15 near the crank-shaft in line with the'valve-stem. These spindles are provided with right and left hand threads, respectively,- and are connected by a sleeve 15', that is interiorly threaded at each end to fit the threads on the spindles. A spiral gear 16, secured on the end of the spindle, meshes with a corresponding gear 17, secured on the crank-shaft 3. The gear 16 makes one revolution to two of the gear 17.

A lever 18 is pivoted at 19 on the enginebed and has a forked link 2O pivotally con-- nected with a ring 21 on the sleeve 15. A quadrant 22 is mounted on the engine-bed and provided at intervals with slots 23, wherein blocks 24 are adjustable. A latch device 25, mounted on said lever, is adapted to engage these blocks and lock the lever against accidental movement in either direction. By adjusting these blocks in the slots 23 the lead and the time of cut-off of the valve can be regulated without stopping the engine. The lever is set in Fig. 1 in position to run the engine ahead, but upon swinging it toward the left into engagement with the other block the sleeve 15 will be moved lengthwise on the Valve-stem, rotating the valve and changing y the normal relative position of the intake and exhaust ports, causing one to take the position formerly occupied by the other with respect to the cylinder-ports and reverse the engine.

A valve of this type will have a very quick cut-off, will be quite' accurately balanced, and being of very simple and durable construction it is not liable to get out of order. It is easily controlled, and by means of the operating mechanism can be readily adjusted to vary the time of cut-o and intake and eX- haust without stopping the engine.

I claim'as my invention- 1. The combination, with a reciprocating engine having double cylinders, of a valvecasing arranged between said cylinders and having exhaust-ports in each end and steam- IIO inlet ports to said cylinders between said eX- haust-ports, a rotary valve in said casing having a centrally-arranged annular passage communicating with the steam-supply, and also having in its periphery on each side of said annular passage a series of longitudinally-arranged steam inlet and exhaust ducts communicating respectively with said annular passage and with an exhaust-port, the steam-inlet ducts on each side of said annular passage being opposite the corresponding exhaust-ducts on the other side, and mechanism for reversing said valve, substantially as described and for the purpose specified.

2. The combination, with a reciprocating engine havingdouble cylinders, of a valvecasing located between said cylinders and having exhaust-ports in each end and steam-inlet ports to said cylinders between said exhaustports, a rotary valve in said casing having a centrally-arranged annular passage or groove communicating with the steam-supply and also having in its periphery on each side of said annular passage a series of longitudinallyarranged steam inlet and exhaust ducts, said inlet-ducts communicating with said annular passage and with said cylinder inlet-ports and separated from said exhaust-ports, and said exhaust-ducts communicating with said cylinder inlet-ports alternately with said inlet-ducts and with said exhaust-ports and separated from said annular passage, and the steam-inlet ducts in one end of said valve and on one side of said annular passage being in line substantially with the corresponding exhaustducts in the other end of said valve and on the opposite side of said passage, and mechanism for reversing said valve, substantially as described and for the purpose specified.

In witness whereof I have hereunto set my hand this 16th day of July, 1904.

OLE HOVE.

In presence of- PETER J oHNsoN, CHAs. M. HANSEN. 

